Fluid controller with joystick capability and actuator therefor

Details Fluid controller with joystick capability and actuator therefor Fluid controller with joystick capability and actuator therefor

1993-07-29

1994-07-19

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91358R, 91467, 180142, F15B 909

Patent

active

053299698

ABSTRACT:
A controller (11) and a system for controlling the flow of fluid to a fluid pressure operated device (C) are disclosed. The controller is of the type including a rotatable spool valve (35) and a relatively rotatable sleeve valve (37). Relative rotation between the spool and sleeve define a main fluid path (MFP) and relative axial movement therebetween defines an auxiliary fluid path (AFP). An actuator (65) generates a mechanical output (71) in response to an electrical input signal (CS) to move the sleeve (37) between its neutral axial position (FIG. 6) and an axial operating position (FIG. 7). Axial movement of the sleeve is controlled by a joystick (J). The system includes various sensors (S,PS,G,P), which can sense a predetermined condition and generate an interrupt signal to interrupt or change the gain of the electrical input signal (CS).

REFERENCES:
patent: 3584538 (1971-06-01), Peterson
patent: 3690400 (1972-09-01), Uchiyama et al.
patent: 4085657 (1978-04-01), Kervagoret
patent: 5016672 (1991-05-01), Stephenson
patent: 5115640 (1992-05-01), Stephenson et al.

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